div#div1 {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
}

div#div1 > img {
    height: 100%;
    width: 100%;
    border: 0;
}

.bg_per {
    background-attachment: fixed;
}


/*
.html-body-overflow
  {
    overflow-x:hidden;
  }*/
